Find Websites Owners with w3who.com
W3Who is a web service which facilitates information from websites, even when the “whois” feature is private. Typing one site, w3who will return all the sites registered from the same owner.
W3who maintains an indexed and large database of adsense and google analytics publisher, making really easy to identify website networks. So, for example if you are working on a startup, using w3who can make an interesting research about the competition.
Even more, you will also receive some other information about the site: server IP address, server location, websites hosted on the same IP and similarly targeted sites by keywords.
